Pump



FIG. 1 is a bottom, left side view of a pump showing my new design;

FIG. 2 is a bottom view thereof;

FIG. 3 is a left side view thereof;

FIG. 4 is a top view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is an end view as viewed along section lines 6—6 of FIG. 3; and,

FIG. 7 is an end view as viewed along section lines 7—7 of FIG. 3. 

The ornamental design for a pump, as shown. 